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12. 发明授权

US5381851A Low pressure chill casting method for casting metal cast components 失效
标题翻译：用于铸造金属铸件的低压冷铸铸造方法
公开(公告)号：US5381851A
公开(公告)日：1995-01-17
申请号：US768748
申请日：1991-10-18
申请人： Georg Bilz , Hans Lammermann , Alfred Dobner , Klaus Sterner , Klaus Riess
发明人： Georg Bilz , Hans Lammermann , Alfred Dobner , Klaus Sterner , Klaus Riess
IPC分类号： B22D15/02 , B22D18/04
CPC分类号： B22D18/04
摘要： A low pressure chill casting method for casting metal components such as cylinder heads or engine blocks of combustion engines or the like, which cast components have wall portions which are locally predominently thinner than in their other regions. In this method, by means of gas pressure, liquid metal is forced from a melt container through a riser tube into a mold. According to the invention, the mold is so arranged that therein the thicker wall portion of the cast component is cast upwardly remote from the gating and the thinner wall portion is cast downwardly in the vicinity of the gating, the liquid metal being introduced at or near the lower region of the mold in the vicinity of the gating into the mold cavity region forming the thinner wall portion. In this connection, liquid metal can be introduced through a base runner at a plurality of gating positions to the lower region of the mold lying in the vicinity of the gating into the mold cavity region forming the thinner wall portion of the cast component.
摘要翻译： PCT No.PCT / EP90 / 01222 Sec。 371日期1991年10月18日 102（e）日期1991年10月18日PCT提交1990年7月25日PCT公布。出版物WO91 / 01832 日本1991年2月21日。用于铸造诸如汽缸盖或内燃机等的发动机缸体的金属部件的低压冷却铸造方法，其中铸造部件具有局部地比其他区域局部地更薄的壁部。在这种方法中，通过气体压力，将液体金属从熔体容器通过提升管推入模具中。根据本发明，模具被布置成使得其中较厚的铸件的壁部分向上远离浇口浇铸，并且较薄的壁部分在浇口附近向下浇铸，液态金属被引入或接近模具的下部区域在浇口附近形成模腔区域，形成较薄的壁部分。在这一点上，液态金属可以通过多个选通位置的底座浇道引入位于浇口附近的模具的下部区域，形成铸塑部件的较薄壁部分的模腔区域。

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